JPS59222557A - Soft glass sealing alloy - Google Patents

Abstract

PURPOSE:To obtain a sealing alloy having improved power to seal soft glass by adding specified amounts of Ni and Cr and small amounts of C, Si, Mn, Al, etc. to Fe and by restricting the amount of S. CONSTITUTION:This soft glass sealing alloy consists of 0.005-0.04% C, 0.05- 0.5% Si, 0.05-0.3% Mn, 40.0-46.0% Ni, 4.5-7.0% Cr, 0.05-0.2% Al, <=0.010% S and the balance Fe with impurities or further contains <=0.1% one or more among Zr, V, Ti and Nb according to need. The mechanism of the adhesion of the sealing alloy to glass is considered to be a process in which an oxide film is formed on the metallic surface and bonds to the glass under fusion. In order to increase the adhesion, the S content is restricted to said low value.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a glass sealing alloy that has good adhesion to soft glass.

High Ni alloys are used as materials for glass and ceramics because their expansion coefficients can be easily controlled to desired low values.

Advances in electronics technology and the mass production of products in recent years have expanded the demand for such glass-based alloys, but at the same time, demands on the properties of the alloys have become increasingly strict. ing.

The present inventors have developed a heron, DF42N, DF52N, 1<
8Ni for glass sealing including ovar and 42-6
Regarding the alloy, we have already discovered and disclosed a composition J that exhibits improved hot workability and suitable glass wettability (Japanese Patent Application Laid-open No. 155353/1983).

In the alloy with -, especially the content of M
1 to a certain limit, and M9%/S%'
By making a particular Nu IIJI, the above objectives have been achieved.

The present inventors continued their research in search of a sealing alloy that exhibits high adhesion to soft glass, and found that a 42-6 series alloy with a specific composition and controlled impurities met this requirement. I found out.

The soft glass sealing alloy of the present invention proposed here (:LLC:
0.005-0.04%, Si: 0.05-0.5
%, Mn: 0.05-0.3%, Ni: 40.0-4
6.0%, Cr1.5-7.0% and Al:Q,
0.05 to 0.2%, S: 0.010% or less, and the remainder consists of Fe and impurities.

It is not true that the content m of N1 and Cr in this alloy must be within the above range in order to match the expansion coefficient with that of soft glass. The other components, ie, c, si, vn, J: and A1, need to be within the above range in order to improve the adhesion to the soft glass.

It was found that S has a great effect on adhesion and should be kept as low as possible. The permissible limit is 0°010%, but it is preferably 0.002% or less. Recent advances in refining technology have made it possible to produce alloys with even low sulfur content of 0.001% S.

When the sealing alloy of the present invention comes into contact with glass, an oxide film is formed on the surface of the metal, which fuses with the glass.
Especially J: I think so. In order to improve the adhesion, the L1 metal flexure and its oxide film are strongly bonded to 1-C.
I have to be there. It seems that the level of S content has an effect on the peeling mf1 strength of this coating, but the reason is not clear. If it is desired that the strength of the oxide film be even higher, Z'
% V 1Ti One or more selected from i and Nb may be added in an amount of 0.1% or less.

J: The H6 alloy of the present invention is made into an ultra-thin plate, and the thickness is Q,
When processing into a 2n+n+ foil, it is necessary to reduce the amount of oxide inclusions such as Ai 203 as much as possible.

For this purpose, η-beta is less than o:o, 003%.

The effects of the present invention will be explained below with reference to Examples.

42-6 alloy with the composition listed on the front of the label was prepared, and the thickness was 0.2
It was rolled into a IIIm foil.

This foil was heated to 110°C in humid hydrogen gas with a dew point of 40°C.
Heat the spoon to 0°C for 90 minutes to form an oxide film on the surface.

We made a number of samples of this sealed with soft glass, applied impact with a hammer, and examined the extent of its destruction.

The results are listed on the table. As an evaluation criterion for adhesion, the degree of peeling between the metal and the oxide film was taken and classified as follows.

○...All (Unacceptable △...20% or less ×--More than 20% No. C--Mr. 1yln--Kinichi Ω"--N This invention) 1 a, (1260,070,1741,55
,90,15・2 0.014 0.12 0.
15 42.0 6.1 0.183 0.01
7 0.27 0.22 42.5 13.4 0
．． 164 0.021 0.18 0.27 4
2.2 G, 2 0.135 0.031 0
．． 10 0.16 41.8 5.7 0.125
0.013 0.25 0.15 42.3
G, 4 0.10 (comparative frog example) 10.012 0.010 0.26 41.9
B, 2 0.142 0.025 0.017 0
．． 19 41.6 5.7 0.12zr, v.

S Ti, Nb O already 410.0032
0.0013 △0
．． 0021 Zr O,00480,00110
V O,002(1 0,0004V 0.00G3 0.0018
00.0021 T i O,00700,
001700,0011Nb O,01200,00
0700,0020V O,00380,0010
00,0150,0012x O,018Zr O,00700,0016xN b
0.0050

Claims (4)

[Claims] (1) C: 0.005-0.04%, 5i10゜0
5-0.5%, Mn: 0.05-0.3%, Ni
:'10.0~46.0%, Cr:4.5~7.0%
and AI +0.05~0.2%, S:0
．． 010% or less, with the remainder consisting of Fcd> and impurities. (2) C: 0.00ei-0.04%, Si: 0°05-0. ! :+%, Mn :Q, 05-0.3%, N
i: 40.0-46.0%, Cr: 4.5-7.0
%d3 and Al: 0.05-0.2%, S
: 0.010% or less, roughly containing Zr, V, Ti
t3yoCfNmu/Jl 6eranda type 1 or 2 l
Soft glass arrival alloy containing 0.1% or less of lll or more and the balance consisting of Fed5 and impurities. (3) S: O, 0.02% or less 1? I8′ [
An alloy according to claim 1 or 2. (4) O: 0,003% or lessr i%leBj
An alloy in the first or second term of the range of n'Fi5'i.