SU958354A1 - Soldering composition - Google Patents

Description

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The image refers to the reflow glasses used in the electronics industry, in particular for sealing cup-type ceramic cases (TO-116).

Known glass cement 1l soldering tl, containing, in wt.%: Lead tizsanat O-5O; | B - E-crypt O-SO and fusible

glass 5О-9 5, incl. RVO 65-95; 0-2.02, 7-20; : p. p-lO. BilOi-S i O O, O, 5-5; Le20zO-5} FO-2; SnO, | tO.2j BaO 0-10; Lij5 О-5; WGa EO-5; KgiO 0-5. The downstream of this glass cement is a high CTE (9O-lpO)) t. that does not provide high-quality soldering from the ceramics to k.

The purpose of the invention is to provide junctions with ceramics.

The goal is achieved by the fact that the composition for spunvmga, containing, in May.%: Lead titanate 5-46, fi - eukryptit 0.1-10 and low-melting glass of the system PbO, BijOj, $ iOrj,

Bi2Oi, ZnO 53.9-88.0, additionally cuts G1 Oj, OZO, MnOi | with next matching Components, wt.%: RVO6O-16

B OS5-14

 Oh 6-2

Si, 9-3

1-18

p0,1-4

TU.0,1-2

ten

cdo0,1-3

MnOrj0,1-4

In tab. 1 shows the specific compositions of glasses.

15 Specific composites for soldering are listed in Table. 2 .;

Explosive materials in powdered form in cockatte conditions (specific, the surface of the organic materials is 1800- 000 g / cm) are mixed until a homogeneous mass is obtained. As a result of mixing, a mechanical mixture is obtained. When sealing, the CBimua titanate and (1-eukrip gig completely dissolve in the glass. The physicochemical properties of the Soldering Compositions are given in Table 3. The Soldering Composition has a low spreading temperature and is well cna-i 5

T a b l and c a I comes with ceramics and metals (covar, feni), forming a sealed junction. Coatings are coated without cracks and gas inclusions, which makes it possible to use solder glass in the electronics industry.

Temperature expansion coefficient of linear expansion (25-25 ° C),

Claims (1)

The formula of the invention 55РвО ,, ,, А € «0 ,, SiOn ,, ipO A soldering composition comprising 53.9-88.0, characterized by wt.% -, Svinda guitar 5-46, / E-ekriptigtem, that, in order to ensure 0.1-10 and low-melting glass system with ceramics, glass aopolnigel1CH1o soaeg. T ablitz a 2 Table 3 5 kHT Ti 6ij; , little, MttOij tipH ecukadem: the ratio of the components OB, wt.%: PBO, 60-16 5-.14 0, O, 9-3 0.1-18 2PO 0.1-4 958354 "with TiOij O, l - SZO 0.1–3 MnO “i 0.1–4 5 Sources of information taken into account during the examination I. Application of Japan N 53-72029, kp. 21 A 296, published. 1978 (1st century).