Powders of new CompoNiAl M5-3 heat-resistant alloy were prepared by mechanoactivated SHS from (Ni–Al–Cr–Co–Hf)–NaCl mixtures. Ni dissolution in Al melt was found to be the motive force of combustion. Unlike the binary Ni–Al system, NiAl is formed not in the melt but in the post-combustion zone as a result of diffusion-controlled processes. Conditions for MASHS were optimized toward fabrication of a superalloy with homogeneous composition/structure and low content of gas impurities. As-prepared combustion product was disintegrated into a powder and the latter was subjected to plasma spheroidization, keeping in mind the needs of additive manufacturing. The attained degree of spheroidization was 98%. The structure and phase/chemical compositions of spherical powders did not differ from those of the synthesized powders. After plasma treatment, the content of gas impurities (О₂ and N₂) decreased.

中文翻译：

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NiAl基难熔合金CompoNiAl-M5-3的窄口微粉的制备

通过机械活化SHS从（Ni–Al–Cr–Co–Hf）–NaCl混合物中制备新型CompoNiAl M5-3耐热合金粉末。发现镍溶解在铝熔体中是燃烧的原动力。与二元镍铝体系不同，由于扩散控制的过程，镍铝不是在熔体中形成的，而是在后燃烧区形成的。对MASHS的条件进行了优化，以制造具有均一组成/结构和低气体杂质含量的高温合金。将准备好的燃烧产物分解成粉末，然后对其进行等离子体球化处理，同时牢记增材制造的需求。达到的球化度为98％。球形粉末的结构和相/化学组成与合成粉末没有区别。等离子处理后₂和N ₂）降低。