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经过氩气保护预热处理，Ni-B4C复合镀层在800℃下抗高温氧化的能力较未经预热处理的镀层强。预热处理可使镀层B4C颗粒发生分解，并促使B元素向镀层表面扩散，生成富集于镀层外侧的新相Ni3B，并呈“岛状”分布。在高温氧化过程中，新相Ni3B优先转化为Ni3B2O6。未经预热处理的镀层，表面氧化膜则为NiO和NiaB2O6的多相结构。均相的Ni3B2O6。氧化膜要比多相的NiO和Ni3B2O6。的致密性好，能更有效地防止或延缓高温下氧对金属Ni的侵蚀，因此经预热处理镀层的抗氧化能力必然优于未经预热处理的镀层。
Pre-heat treatment by argon protection, Ni-B4C composite coating at 800 ℃ high temperature oxidation resistance than the pre-heat treatment without plating. The pre-heat treatment can decompose B4C particles in the coating and promote the diffusion of B element to the surface of the coating, resulting in the formation of “island-like” Ni3B enriched in the outer layer of the coating. In the high-temperature oxidation process, the new phase Ni3B preferentially converts to Ni3B2O6. Without pre-heat treatment of the coating, the surface oxide film is NiO and NiaB2O6 multi-phase structure. Homogeneous Ni3B2O6. The oxide film is more heterogeneous than NiO and Ni3B2O6. Of the dense, can more effectively prevent or delay the high temperature oxygen under the attack of metal Ni, so pre-heat treatment of the coating must be better than the anti-oxidation coating without pre-heat treatment.