The amorphous surface layer of tantalum was obtained by anodic oxidation in melting nitrate after plasma - nitriding at relative low temperature , and the composition , phase structure and property of coating were tested 摘要采用低温离子渗氮后再熔盐阳极化的方法，在钽表面形成厚度达微米数量级的非晶态层，测试了非晶层的成分、相结构和性能。
By high - temperature solution technique , the pmnt , pznt single crystals with perovskite structure were successfully prepared and the crystals showed size from 0 . 5mm to 5mm , and color from light yellow to brown . 2 采用高温熔液法成功地制备出钙钛矿相结构的pmnt 、 pznt单晶材料，制备的pmnt 、 pznt单晶颗粒大小多为0 . 5mm 5mm之间，晶粒呈淡黄色，少数呈灰褐色。
Reversion - recrystauization can increase electrical conductivity . precipitation can also increase conductivity by reducing solid solubility in matrix . finauy , high - conductivity of auoys come from disperse and duplex phase structure 合金高导电性的根本原因在于时效后形成的弥散型复相结构，细小的析出粒子弥散分布于高电导率的基体之中，对电导率的影响很小。
There are several interesting results we have got : 1 . the xrd patterns of composite sample between lai . xsrxmno3 and ( ni , zn ) fe2o4 showed that the two matters existed in themselves phase , and there was no reaction between them at all . 2 在复合了软磁铁氧体材料的样品中，复合体系在高温下烧结后，两种材料各自保持自身的相结构，没有发生改变，并且没有生成新的物质。
As increasing surfactant concentration , temperature or adding cosurfactant in certain range , the arrangement of hydrocarbon chains will change from sparse to dense which results in the structural transformation of lamellar phase from " flexible " to " planar " bilayers 通过对散射曲线的解析，讨论了表面活性剂浓度、温度和助表面活性剂等三个方面对溶致液晶层状相结构有序性的影响。
The molecular structure of the sputtered titanium oxide films were investigated by xps and x - ray diffraction . it was found that the ratio of ti / o increases when pressure increases , and there is a optimum ratio of ar / o2 for the sake of obtaining more tio2 on pet surface 利用x射线衍射法( x - ray )对溅射沉积膜的表面物相结构进行了研究，发现在本实验室条件下溅射生成的膜均是无定型结构。
Secondly , the sns films were prepared by constant potential electro - deposition in the bath temperature of 30 ~ 50oc , and the influence of bath temperature on the surface micrograph , composition , structure and optical properties of the films was studied 在确定这些基本工艺参数的基础上,当电解槽的温度在30 ~ 50oc变化时,用恒电位法制备sns薄膜样品。研究温度对薄膜的表面形貌、微区成分、物相结构以及光学性能的影响。
Results show that zro2 - ni cermet has clear crystalline interface and uniform distribution . its crystal size is 0 . 3 p m . through analyzing the data of specific heat of zro2 - ni cermet , it reveals that adulterating cobalt can enhance the wetting quality of ni and zro2 用xrd 、 sem研究了zro _ 2 - ni - co金属陶瓷的相结构和形貌，确定了合适的烧结温度，结果表明，材料的晶粒大小和分布十分均匀，晶界清晰，粒度在0 . 3 m左右。
Spinel limn2o4 begin to form at 350 with the sintering time of 4 hours because there are one li + and two mn2 + in one precursor molecule . when the sintering temperature is larger than 750 , a specific sintering route is designed to avoid the formation of li2mno3 impurities 前驱体的焙烧温度和焙烧时间对limn _ 2o _ 4样品的晶相结构有很大的影响，焙烧温度高于750时，应采用分段焙烧工艺以防止局部高温形成li _ 2mno _ 3杂质。
Namometer silicon carbide powder was prepared from industrial silicon carbide by high energy ball milling . then the morphology and the phase structure of the milled powder were inspected by y - 4a xrd and philips xl30 peg sem . , the variational rules of milled sic powder size were determined 用philipsxl30feg型扫描电镜、 y - 4a型x射线衍射仪对球磨后的粉末进行了形貌观察和相结构分析，统计了sic粉体尺寸随球磨时间的变化规律。
