Photosensitive Centers in CdTe〈Ge〉, CdTe〈Sn〉, and CdTe〈Pb〉

The spectral and temperature dependences of photoconductivity in CdTePb crystals under band-gap and combined excitation were studied at photon energies in the range 0.53–1.7 eV and temperatures from 80 to 300 K. The high photosensitivity of the crystals and the observed IR and temperature quenching of photoconductivity indicate that, just as in CdTeGe and CdTeSn, the recombination processes in CdTePb are dominated by deep centers with drastically different capture cross sections for electrons and holes. Some parameters of the centers are determined. The results suggest that the likely defect species responsible for the high photosensitivity of CdTePb is an acceptor complex consisting of a Cd vacancy and a metal (Ge, Sn, Pb) ion on the Cd site: (V ^2– _CdM⁺)^–/0.     

工厂动力实用技术资料〈37〉

1．城市垃圾焚烧炉排放烟气中的有害物质 城市垃圾焚烧炉排放烟气中包含的有害物质有：烟尘（飞尘）、HCl、SOx、Nox、CO、重金属（如铅、汞、铬、镍、镉、铁、铍等）和二嚼英类（PCDD／Fs）等。见表1和表2。PCDD／Fs是人们强烈关注的一类毒性很强的物质，是多氯代二苯并二嚼英PCDD和多氯代二苯呋喃PCDF的合称，总称为二嗯英类物质。PCDD／Fs虽然极其微量（表2），但是由于其毒性剧烈，所以必须用烟气净化设备高效率地加以脱除。     

工厂动力实用技术资料〈43〉

1．冷凝型锅炉冷凝液的特性实验数据 冷凝型锅炉是指能从锅炉排烟中吸收其水蒸汽所含的汽化潜热的锅炉。理想的烟气冷凝液应该是纯水，但在实际上，由于燃料中含有杂质等原因，冷凝液总含有各种化学成分，冷凝液中的主要化学物质为硫酸盐、亚硝酸盐、硝酸盐、碳酸盐和酸。由于酸类物质的左右，冷凝液会与其接触材料产生腐蚀作用，因此，冷凝液中还会含有从金属壁面侵蚀下来的一些物质。     

工厂动力实用技术资料〈38〉

1．气体和油晶和爆炸浓度极限，2．常用燃料的理论空气需要量和理论燃烧产物量的经验公式     

The plastic behaviour of 〈100〉 and 〈111〉 textured polycrystalline metals during simultaneous torsion and extension

On the basis of computer-calculated yield functions, the work hardening of 100 textured Cu-0.64 at % Co-0.48 at % Si and 111 textured polycrystalline copper wires were studied by simultaneous torsion and extension and by pure extension. Representing the work hardening by resolved shear stress-resolved shear strain curves, the rate of hardening is significantly lower for torsion than for pure extension. This behaviour is explained by the operation of different slip systems activated in the two modes of deformation. In the 100 textured Cu-Co-Si wires, heterogeneous plastic deformation was observed beyond about 80% shear strain.     

Co-yield surfaces for {111}〈110〉 slip and {111}〈112〉 twinning in fcc metals

The co-yield surfaces in fcc single crystals for slip on 11111110 and twinning on {111}112 systems have been analyzed and derived systematically for the first time. The results demonstrated that only if the ratio of the critical resolved shear stress (CRSS) for twinning to that for slip is within the range of , slip and twinning can occur together. There are only two types of co-yield surfaces when is within this range. The corresponding analytical expressions of all possible types of yield vertices are also derived and tabulated. One type consists of 259 co-yield stress states when , which can be classified into 21 groups in stress space according to the crystal symmetry. The other type contains 259 co-yield stress states also when , which can be subdivided into 19 groups. Of the two types of the co-yield stress states, 139 ones are common and 120 ones are different.