The corrosion resistance and microstructure of anisotropic Nd-Fe-B magnet prepared byspark plasma sintering (SPS) technique were studied. The SPS Nd-Fe-B has displayed more positive corrosion potential Ecorr and lower corrosion current density Icorr than those of the conventional sintered Nd-Fe-B with the same composition in several electrolytes, indicating better anti-corrosion properties. It also shows good stability in an oxidized atmosphere. The microstructure of SPS Nd-Fe-B magnet indicates that the grain size of Nd2Fe14B is fine (about 6 mm) and uniform, and the Nd-rich phase does not form along the grain boundaries of Nd2Fe14B, but agglomerates into the triple junctions. Therefore, the pathways for corrosion propagation are restricted and the inter-granular corrosion process through Ndrich phase in the magnet is suppressed effectively. As a result, the SPS Nd-Fe-B magnet possesses excellent corrosion resistance.

Single-phase polycrystalline CoSb3 skutterudite thermoelectric compounds have been synthesized by spark plasma sintering (SPS) and the thermoelectric properties including Seebeck coefficient, electrical resistivity and thermal conductivity are measured from room temperature to 800 K. The CoSb3 compound with relative density of 97.4% and grain size of about 100 nm is achieved under the sintering condition of 873 K for 5 min, and a maximum thermoelectric dimensionless figure of merit value of 0.095 is obtained at about 673 K.

用溶胶-凝胶（Sol-Gel）法制备了RE（RE=La，Y）-Mo复合氧化物粉末，工艺条件：初始溶液pH值=1，于550℃分解胶体，500℃，900℃2次还原粉末。采用XRD，TEM对还原后粉末的相组成、形貌、粒度进行分析。结果表明：500℃还原后，单质Mo衍射峰出现，RE以非晶态RE-O-Mo存在；900℃2次还原后，RE 以氧化物形式存在。红外光谱（FT-IR）分析结果表明，La和Y通过O与Mo键合，削弱Mo=O键，使稀土钼复合氧化物可还原性增强。TEM分析表明，还原后稀土钼粉末粒径在70nm左右。