铬又能进步钢的抗氧化性和耐腐蚀性，因此是不锈钢，耐热钢的重要合金元素。
Chromium can improve the oxidation resistance and corrosion resistance of steel, so it is an important alloying element in stainless steel and heat-resistant steel.
结果表明，镍基高温合金经电解渗铝后；其抗高温氧化性能和耐热腐蚀性能大为提高。
The results obtained have shown that the thus processed Ni-base superalloys possess both greatly enhanced oxidation resistance and highly improved hot-corrosion resistance.
螺杆料筒采用优质合金钢，表面氮化处理，耐热、耐磨、耐腐蚀。
Screw bat of feed hopper abopted with alloysteel, special handing on surface, durabie in heat, wear and corrosion.
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