(1. 東北大學(xué) 材料與冶金學(xué)院， 沈陽 110006；
2. 長春黃金研究院， 長春 130012)
摘 要: 提出了將自蔓延高溫合成技術(shù)與傳統(tǒng)冶金手段相結(jié)合的SHS熔鑄技術(shù)，充分利用自蔓延高溫合成的優(yōu)點(diǎn)，以CuO，Cr2O3和Al為原料，制備CuCr合金觸頭材料。通過對(duì)CuO-Cr2O3-Al反應(yīng)體系的絕熱溫度計(jì)算及熱力學(xué)分析，確定該體系自蔓延反應(yīng)進(jìn)行的可行性，并對(duì)反應(yīng)后液態(tài)金屬Cu和金屬Cr的冷凝過程進(jìn)行了初步的分析與計(jì)算。結(jié)果表明合金液在金屬模和石墨模中的冷卻速度都比較快，且在石墨模中冷卻效果更好些。實(shí)驗(yàn)證實(shí)該工藝可行，并得到了鑄態(tài)結(jié)構(gòu)的合金體。
關(guān)鍵字: CuCr合金; 觸頭材料; 自蔓延熔鑄技術(shù)
SHS-melting technology
WEI Shi-chen1， BI Shi-wen1， WEI Li2
（1. College of Materials & Metallurgy,
Northeastern University, Shenyang 110006, P.R.China；
2. Changchun Gold Research Institute,
Changchun 130012， P.R.China）
Abstract:The SHS-melting technology was suggested to product CuCr alloy contact materials, in which Cr2O3 and CuO were taken as raw materials and Al as a reductive agent. The adiabatic temperature was calculated and thermodynamics was analyzed for the reaction. The feasibility of the SHS reaction was determined consequently, the combustion products and the solidification process of molten Cu and Cr were analyzed and calculated elementally. The results show that the molten alloy solidifies fast either in metal pattern or in graphite pattern, but better in graphite pattern. It is proved that this suggestion is feasible and CuCr alloy withcasting structure was obtained.
Key words: CuCr alloy; contact material; SHS-melting technology
