JPS58153757A - Gallium-containing amorphous magnetic alloy - Google Patents

Abstract

PURPOSE:To improve magnetic characteristics and heat stability, in a ferrous element-B amorphous magnetic alloy, by adding Ga. CONSTITUTION:This Ga containing amorphous magnetic alloy is shown by the formula (wherein M is one kind or more of B, C, Si, P and Ge and, on the basis of an atomic percent, 0<=x+y<81, 13<=alpha<=30.0, 0<beta<=20, 13<alpha+beta<=50). This alloy is the one which consists of 70-87 atomic % magnetic element including Fe and 13-30 atomic % semi-metal element such as Si, P, C, Ge including B and the part of the magnetic elements Fe, Co, Ni or the part of the semi-metal elements is substituted with max. 20% Ga.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gallium-containing amorphous oxide alloy.

Normally, solid kettles or alloys are in a crystalline state vc at room temperature.
If the liquid is in a molten state and is specially cooled (depending on the composition of the alloy, it is about 1L + 4 to 1011K/cooling), it will form a periodic array of atoms similar to that of a liquid. You can obtain a solid substance that does not have any physical properties (=).

This fine gold ring or alloy is known as amorphous pot darkness. In general, amorphous metal is an alloy consisting of two or more elements, and the atomic radius is different due to the combination of the metal element and the silk of the metal element. It consists of a combination of transition metal elements. Among these amorphous alloys, it is known that some alloys containing iron group elements (Fe, Co, Ni, etc.) exhibit strong strength. Approximately 15-30
The tl' e -B yarn amorphous '6 kettle containing B of 7 Princes has a higher saturation magnetic vermilion density than other amorphous alloys, or R-[(asega, wa et Δppl.

PhyS, ■, ett, 29.219 (1976)
I am fortunate to have been informed.

Thermal stability of 1+'e-B amorphous alloys,
Several attempts have been made to write the arsenic characteristic t4.

For example, to improve thermal stability, K V , Mn, Mo
Attempts have been made to add elements such as these, or elements that screen these thermally stable elements are undesirable because they reduce the magnetic %111 to a low 1;σ. Attempts have been made to improve thermal stability through appropriate combinations, but even combinations of semimetallic elements intended to increase thermal stability are hardly able to improve magnetic properties.

The present invention improves magnetic properties and thermal stability by adding Ga to an amorphous magnetic alloy.

The alloy of the present invention has a magnetic element containing SE θ of 7 tl to 87 tl.
In those consisting of 13 to 50 atoms of half-clear elements such as Si, P, O, Ga, etc. containing atoms Q and B, some of the magnetic elements Fθ, Co, and Ni and some of the free elements fK- Ca'''c is a material that has been hardened at 0% sintering.Here, as a magnetic element, there are 15 atoms or more.
One or more of 'Fe, Co, Ni containing 5
The reason why the number is 0 to 87 atoms is because it is a preferable practical range from the viewpoint of saturation magnetic flux density. That is, when F'e is less than 15 L electrons, the saturation magnetic flux density becomes more than 10 KG, making it impractical, and when one element among Fe, Co, and Ni exceeds 87 atomic coefficients, it becomes practically non-effective. Crystallization becomes difficult. Metalloid elements B, Si, P,
C, Ge, etc. can be made amorphous in the range of 16 to 50 atoms in the present invention. Oa is a magnetic element) i” e
, Oo, and Ni can be substituted with @ cylinder 20 atomic % sweetness. After this, the addition of qa is also possible, but 2
It is not practical because it reduces the strength and toughness, which are one of the characteristics of amorphous alloys, and also causes a substantial decrease in magnetization. It disappears.

On the other hand, regarding the substitution of Ga with the metalloid element, since the alloy of the present invention can be made amorphous in the range of 16 to 60 atoms of the metalloid element, # can.

The present invention will now be explained based on examples.

[Example 1] There are many known manufacturing methods for amorphous alloys, but one that is practical and suitable for one production is the so-called single-roll method @6.
There is a law. In the single-roll cooling method, a roll made of metal with a high heat transfer rate that rotates at high speed is melted on the surface, and is cooled at one speed by spewing out molten metal to obtain a ribbon-shaped amorphous pot. It is something. In this example, this method
Although a sample was prepared using C, it goes without saying that non-invention applies regardless of the manufacturing method.
It can also be applied to samples prepared by special cooling method, centrifugal cooling method, sputtering method, etc. The primary composite of the present invention can be produced by the elephant cooling method in the atmosphere, in an inert gas atmosphere, or in a vacuum.

The saturation magnetic flux density, Curie temperature, and crystallization temperature at room temperature can be determined from the magnetic curve.

In the magnetization-temperature curve, a rapid change in magnetization is observed when transforming from an amorphous state to a crystalline state, and here, the temperature at which this transformation starts is defined as the crystallization temperature. In addition,
Although the Curie temperature and crystallization temperature depend on the heating rate, a contract temperature rate of approximately 2.5 K7mJ,n was used for measurement.

There are various methods for identifying the amorphous state, but here we primarily used a method using X-ray diffraction to confirm whether the amorphous state can be determined.

Figure 1 shows F4366wiGa father B of the alloys of the present invention.
20(!l: VeB3 = @ Gai B17) shows the Oa 174 degree change in the saturated m-east density at room temperature.

= 5- The saturation magnetic flux density reaches its maximum when X is around 3 atoms, and the addition of Ga has the effect of increasing it by about 10% compared to conventional Fe-B alloys.

Figure 2 -〇°θ'''-X''X Changes in the Curie temperature and crystallization temperature of B17 are shown with respect to composition changes in 0a.

The addition of Ga increases both the Curie temperature and the crystallization temperature. In particular, the addition of Ga 4 atoms has a remarkable effect of increasing the Curie temperature to - even above 100°C Jν when f+l1 years old.

[Example 2] The composition of the alloy of the present invention is Fe and Co as magnetic elements.

Ni, Ga as an additive element, and mainly B as a metalloid element
However, a part of the metalloid element B can be replaced with another metalloid element, and metalloid elements other than B such as Si, P,
By adding O, Ge, etc., it is also possible to further improve the properties of the alloy.

In general, the effect of metalloid elements is on the ability to form amorphous materials.
j: P, Si, and B are suitable; l1si,'B is preferred due to its thermal stability and resistance to embrittlement; P and C are not preferred.

In terms of magnetism, B and O are used for saturated magnetization.

-6= Sl is tl'f agile, and P, I B , Ga, and sl are said to be favorable for raising the Curie temperature.

As mentioned in the previous point, the alloy of the small invention has the effect of increasing the saturation density, the Curie temperature, and the crystallization temperature due to the addition of ()a, but as can be seen in Figure 2, 1 ”
eB3- In this case t7
By substituting a part of the semi-excited light element B with Sl, the crystallization temperature can be increased by more than 1f of the Gury temperature without reducing the magnetic flux.

It is difficult to increase the crystallization temperature of amorphous magnetic carp for the following reasons.

One reason is that the withstand temperatures of the kettles can be varied by σ. When amorphous '1 alloy crystallizes, it becomes brittle, and amorphous '1
There may be a significant change in the magnetic properties derived from the structure. Another reason is that magnetic alloys are heat treated! This magnetic P+'W can be worked on to improve the phlegm and sex.
1; Since the weight is used at a temperature near Curie rhw or above one Curie temperature, it is desirable that the crystallization temperature of an amorphous alloy is one Curie temperature or higher.

Figure 5 shows B'e7gGa4-517 V) Part of B
s i -Cf& and T"87gGa4Bl7-
XSiX Toshita alloy, 7) CulJ 77@IW and the change in crystallization temperature were measured at 7C'.

The crystallization temperature becomes higher as .gl increases. The present invention's refrigerated steel has a small residual magnetic flux density σ, and the squareness ratio (Zanbo Sen (Zhu Mi IW/醜) (1 Chi (To Mi jβ')) is also small, but it can be annealed in a magnetic field or It is conventionally known that when annealing under any stress, the magnetic anisotropy is reduced and these properties are significantly improved. Quality (In alloy is the same as the bag property modification method. 1'07g (ja4)'3Hs
The il is placed in a vacuum in a non-digestive atmosphere and annealed in-situ (
4 in the magnetic field of 25116+ (approx. 5 after holding at 10℃ for 30 minutes)
The saturation magnetic flux density of ILL is approximately 7%. As the temperature rises, the magnetic force decreases by 1 minute.
The μj shape ratio has decreased significantly.

['Example 6] Figure 4 shows two rods of alloy Fe8l-xDo, upper 117 L, h 2 and H・θ8□-xN i XB17
This figure shows the change in the saturation magnetic flux density of Ga2 at room temperature as a function of X. Some units of Fe CoV (Okii-r
Then, the saturation magnetic flux density further increases in ten rows, and as shown in Fig. 2, 15.00 becomes the maximum (iI
′! 17.6 K G 7+-. When replacing Tl'e with N1, the saturation magnetic flux density hardly changes when N1 is 6 atoms or less, but decreases to a single core of 1 when N1 is 6 atoms or more. The replacement of re with ('!o, Ni is O
The range of ≦CO≦24,05Ni≦3 is optimal, but
It is a stable amorphous W magnetic alloy even when the alloy vC is larger than the above, and maintains the percentage characteristic of -C, and 0-≦D
It is practical within the range of 72.

As mentioned above, magnetic elements Fθ, co, old and half metal −
Magnetic properties and riA stability t]1 can be improved by adding 08 to an amorphous magnetic alloy consisting of the element.

[Brief explanation of the drawing]

p 11%l is II' e -B-Ga series alloy x rw, T saturation, etc. ()a graph of composition change of Song density, = ~ 9-8142 Figure is de Ga thread alloy gyu? No warm I
Figure 6 is a graph showing changes in the composition of flea as changes in glue and crystallization temperature. Te7
] Figure 4 shows Fe-Co-B-Ga and 1 (sneak e-Ni, -
Determine the saturation magnetic flux density of B-Ua alloy at room temperature7'L
t: o. It is a graph shown as a change in the composition of N1. The above is the second case law agent Masuriju Mogami-10-

Claims (1)

[Claims] In the composition formula %, M is one or more elements of B, C, Si, P, and Gθ, and the ring molecule fraction is U≦X 10y (81 13≦α A gallium-containing amorphous magnetic alloy characterized in that ≦60 O<β≦20 13<α”−β≦50.