太阳能热水器单片机控制设计

介绍美国Ｍｉｃｒｏｃｈｉｐ公司的高性能单牒同ＰＩＣ１６Ｃ７３及其在太阳能热在控制中的应用，阐述了其工作原理，给出了系统硬件的软件框图。     

再结晶钝钼片材尺寸对延—脆性转变温度的影响

本文在液氮温度到室温范围内，对不同宽度和厚度的试样进行了三点弯折试验，研究了试样尺寸对再结晶纯钼片材的延－脆性转变温度的影响。本研究用二个参数、即临界应力和临界温度描述材料的延－脆性转变特性，结果归纳如下：（１）试样厚度为１．０ｍｍ时，试样宽度在１￣４ｍｍ范围内宽度对临界应力和临界温度的影响几乎可忽略不计。（２）试样宽度为４ｍｍ时，试样厚度在０．５￣１．０ｍｍ范围内厚度对临界应力和临界温度的影响几     

人工神经网络技术在板料激光弯曲中的应用

基于人工神经网络基本理论,建立在板料激光弯曲中预测材料表面最高温度、弯曲角度的BP网络模型。借助于MATLAB仿真软件中的神经网络工具箱作为开发平台,将试验样本数据和经过试验验证的数值计算结果作为补充的样本数据用于BP网络的训练,利用训练好的BP网络对非线性的样本数据规律进行拟合,实现激光加工工艺参数的优化,为实际生产和加工提供有效的依据。     

从800nm到远红外都灵敏的探测器

红外探测广泛应用于工业、监视、医疗和防御等领域？红外辐射直接反映物体的温度，但是物体的形状、尺寸和表面特性郜埘信号有影响，所以红外辐射和温度之间的一阶关系是不严格的。     

Effects of Substrate Temperature on Helium Content and Microstructure of Nanocrystalline Titanium Films

Helium-charged nanocrystalline titanium films have been deposited by HeAr magnetron co-sputtering. The effects of substrate temperature on the helium content and microstructure of the nanocrystalline titanium films have been studied. The results indicate that helium atoms with a high concentration are evenly incorporated in the deposited titanium films. When the substrate temperature increases from 60℃ to 350℃ while the other deposition＇parameters are fixed, the helium content decreases gradually from 38.6 at.% to 9.2at.%, which proves that nanocrystalline Ti films have a great helium storage capacity. The 20 angle of the Bragg peak of （002） crystal planes of the He-charged Ti film shifts to a lower angle and that of （100） crystal plane is unchanged as compared with that of the pure Ti film, which indicates that the lattice parameter c increases and a keeps at the primitive value. The grain refining and helium damage result in the diffraction peak broadening.     

A Calculation Approach to Elastic Constants of Crystallines at High Pressure and Finite Temperature

Elastic constants of Na and Li metals are calculated successfully for temperatures up to 350K and pressures up to 30GPa using a scheme without involving any adjustable parameter.Elastic constants are assumed to depend only on an effective pair potential that is only determined by the average interatomic distance.Temperature has an effect on elastic constants by way of charging the equilibrium.The elastic constants can be obtained by fitting the relationship between total energy and strain tensor using the new set of lattice parameters obtained by calculating displacement of atoms at the finite temperature and at a fixed pressure.The relationship between the effective pair potential and the interatiomic distance is fitted by using a series of data of cohesive energy corresponding to lattice parameters.     

温度测量装置的控制方法

在现代工业生产中，温度测量装置的使用十分广泛。在许多场合如热处理、热加工、温度实验等都需要严格的控温条件，才能保证产品的质量。因此，对使用中的温度测量（或控制）装置必须进行控制，确保其可靠性。温度测量装置属于计量器具，应遵循我国《计量法》的规定定期周检，但是在实际工作中，情况往往比较复杂，需区别对待和处理。温度测量装置有许多种类，具体的控制方法大体有两类：1.送实验室周检；2.现场校准。周检法用于能运送到实验室的有适用检定规程的温度测量装置，如常用的XCT型动圈式温度指示调节仪（适用国家计量检定规程J…     

Growth of NaBi（WO4）2 Dendrite and Mechanism

The solid-liquid interface motion of NaBi（WO4）2 （NBWO） melt crystal growth is observed in an in situ system, in which the whole processes of interface transition from fiat interface and cellular to dendrite are visualized. The spacing of the dendrite under smaller temperature gradient turns out to be larger than that under larger temperature gradient, which is found to be sensitive to the temperature distribution. The mechanism of dendrite growth of NBWO is studied based on the model of the growth units of anion coordination polyhedra. The { 001} face has two apex links, so it shows higher stability and has high growth rate and forms the arm of dendrite, whereas the {010} face has only one apex link, and thus shows relative slower growth rate and firstly forms the branches.     

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BPM Helix自动烧录系统，KIC Explorer热温度曲线系统，LeadTracer—RoHS XRF系统，SMT3000LD自动去助焊剂系统     

热处理条件对双粉工艺中Bi—2212粉末的相组成影响

实验研究了Bi-2212粉末在空气，8％O2和纯O2种处理的相组成特征，指出通过改变热处理温度和气氛可控制前驱粉中对2223成相影响较大的(Bi，Pb)-2212相，Ca2PbO4相，2201相和14：24AEC等相。