The commonly used alloy powders for powder plasma arc surfacing mainly include self fusible alloy powder and composite powder. Today's article introduces composite alloy powder.
Composite powder is composed of two or more solid phases with different properties. There is an obvious phase interface between different phases. It is a new engineering material. The composition of composite powder can be metal and metal, metal (alloy) and ceramic, ceramic and ceramic, metal (alloy) and plastic, metal (alloy) and graphite, etc. it has a wide range, including almost all solid engineering materials.
According to the structure of composite powders, they can be generally divided into coated, uncoated and sintered powders. The core particles of the coated composite powder are completely coated by the coating material; For the core material of uncoated powder, the degree of coating by the coating material is incomplete, which depends on the ratio of components. Whether the coated composite powder or uncoated composite powder, the combination between components is generally mechanical.
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