To cite this article: A.M. Stolin, P.M. Bazhin, M.V. Mikheyev, O.A. Averichev, A.S. Saguidollayev & K.T. Kylyshbaev (2014): Deposition of protective coatings by electric arc cladding with SHS electrodes, Welding International,Coatings were produced by electric arc cladding with self-propagating high-temperature synthesis, based on a titanium carbonitride hard alloy and a cobalt binder. The results show that the deposited layer consists of three characteristic zones containing titanium carbide grades, distributed in the iron-cobalt matrix. The content of the titanium carbide grains in the coating reached 80%. The hardness of the deposited layer was 56-58 HRC. Industrial tests of the deposited areas of a jaw breaker in the zone of the effect of maximum loading showed that the rate of wear of the deposited layer is 1.5 -2 times lower than the rate of wear of the lining made of 40Cr steel.
The effect of tin content in an Al-Sn alloy in the range from 0 to 100 at.% on its mechanical properties was studied. An increase in the tin content leads to a monotonic decrease in the microhardness and conditional yield stress of the Al-Sn alloy from 305 to 63 MPa and from 32 to 5 MPa, respectively. In addition, Young’s modulus and the shear modulus of the Al-Sn alloy decreases from 65 to 52 GPa and from 24 to 20 GPa, respectively. The effect of tin content in the Al-Sn matrix alloy in the range from 0 to 50 at.% on the strength of a carbon fiber/aluminum-tin-matrix (CF/Al-Sn) composite wire subject to three-point bending was also investigated. Increasing tin content up to 50 at.% leads to a linear increase in the composite wire strength from 1450 to 2365 MPa, which is due to an increase in the effective fiber strength from 65 to 89 at.%. The addition of tin up to 50 at.% to the matrix alloy leads to the formation of weak boundaries between the matrix and the fiber. An increase in the composite wire strength is accompanied by an increase in the average length of the fibers pulled out at the fracture surface. A qualitative model of the relationship between the above parameters is proposed.
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