用均一沉淀法在金刚石表面沉积二氧化钛，探讨了沉积工艺条件。覆层在高温和真空条件下被还原为单质金属钛，X 射线衍射分析表明金刚石表面有钛和碳化钛生成。

作为一种新兴的微粉制备工艺,喷雾热分解技术（SP）已广泛应用于各种功能材料的制备。本文介绍喷雾热分解工艺过程及特点，对近年来SP在发光体材料、超导陶瓷、催化剂、锂电池正极材料等功能材料中的最新研究进展予以综合评述，对其前景作了展望。

The coatings of W-Ti carbides on the surface of diamond was obtained by using physical vapor de-position (PVD), during which WO3 powders pre-treated with hydrofluoric acid were reduced by titanium hy-dride in vacuum at 850℃. The resistance of diamond to corrosion at high-temperature was investigated. The formation of W-Ti carbides on the surface of diamond was verified by X-ray diffraction analysis, the interface state between diamond and matrix in metal-base diamond composite was observed by scanning electron micro-scope. The results showed that the carbide coating is easy to be formed at low deposition temperature on the surface of diamond, while the resistance of diamond to corrosion at high-temperature and the strength of bond-ing between diamond and metal matrix are effectively improved.

LiFePO4/C composite was synthesized by high temperature solid2state reaction using iron (Ⅱ) oxalate, ammonium di2hydrogen phosphate and lithium carbonate with a kind of carbohydrate dissolved in the dispersant (eth-anol) as carbon sources added to the synthetic precursor. The samples were characterized by X2ray diff raction (XRD), scanning elect ron microscopy observations (SEM), charge/ discharge test, cyclic voltammet ry(CV) and carbon analysis. The result s show that the synthesis of LiFePO4/C has ordered olivine st ructure. The carbon has two advantages: optimizing particle size of LiFePO4 and increasing the elect ronic conductivity and high Li+diffusivity. The cathode material can demonst rate a charge/discharge flat voltage of 3.4V (vs Li+/Li). Especially the active material with 15% and 20% carbohydrate added according to the final product of lithium iron phosphate shows very good elect rochemical performance delivering about initial 150.2 mA·h·g-1 and 162.0 mA·h·g-1 specific capacity respectively at 0.1 C rate and the carbon contents in the final production are only 5.17% and 5.29%, respectively.

LiFePO4/C composites with good rate capability and high energy density were prepared by adding sugar to the synthetic precursor. A significant improvement in electrode performance was achieved. The resulting carbon contents in the sample 1 and sample 2 are 3.06% and 4.95%(mass fraction), respectively. It is believed that the synthesis of LiFe2PO4 with sugar added before heating is a good method because the synthesized particles having uniform small size are covered by carbon. The performance of the cathodes was evaluated using coin cells. The samples were characterized by X2ray diffraction and scanning electron microscope observation. The addition of carbon limits the particles size growth and enables high electron conductivity. The LiFePO4/C composites show very good electrochemical performance delivering about 142 mAh/g specific capacity when being cycled at the C/ 10 rate. The capacity fade upon cycling is very small.