腐蚀试样的表面状态(粗糙程度)对母材金属的耐点蚀性能有明显的影响。
The surface condition (roughness) of corrosion test sample has a pronounced influence on the pitting resistance of the base metal.
提出了典型镀层腐蚀试样的制备及利用灰度直方图来检索腐蚀图像的一般框架。
The preparation of typical coating corrosion samples and common frame of grey histogram-based image retrieval are presented.
设计制作了腐蚀气体环境下适用于柔度法的中心裂纹M(T)试样及相应的腐蚀环境循环装置。
The Middle-Tension specimen and the corrosive gas cyclic apparatus have been designed and made fitted for automatic measurement using compliance method.
断口扫描观察表明,试样破断是由于腐蚀隧洞沿滑移面生长并受到拉伸撕裂所致。
Fractured surface scanning observation showed that the breakage in specimen resulted from the corrosion tunnels generating along slip planes and being torn by tensile stress.
进行了模拟原电池试验和预蠕变试样的应力腐蚀试验。
Simulated galvanic cell tests and stress corrosion tests using pre-creeping specimens were conducted.
比较两种材料试样在一定时间内的失重变化情况,表明低碳高合金钢的抗冲击腐蚀磨损性能优于高锰钢。
Wear loss of specimens for these two steels during a certain time show that low carbon high alloy steel is much more resistant to corrosive impact abrasion than high manganese steel.
片状试样表面剪切力分布与腐蚀结果一致。
Shear force distribution of round sample has good agreement with corrosion results.
实验结果发现,试样表面出现大量的氧化腐蚀坑,表面主裂纹优先通过这些腐蚀坑扩展。
Plenty of oxidation etching pits are found on the surface of the specimen after the thermal fatigue test, and the surface principal crack is prone to propagate through these etching pits.
随着试验周期的延长,表面产生了腐蚀产物,这时冲刷作用对试样表面腐蚀产物膜的破坏更加严重,所以冲刷腐蚀速率比浸泡腐蚀速率增加。
Along the experiment time was prolonged, the corrosion products was appeared on the surface of sample. Then the runoff effect became more aggravated, so the dynamic corrosion rate was elevated.
用光滑试样慢应变速率拉伸法研究了X60管线钢在含水土壤中的应力腐蚀。
Stress corrosion cracking of an X60 pipeline steel in soil containing water has been investigated using slow strain rate test.
以45钢、A3钢、炮钢、20钢为金属试样,研究它们在中性盐雾加速试验及石家庄大气环境暴露试验中腐蚀失重与时间的变化规律。
The correlativity between neutral salt spray accelerated test and atmospheric corrosion test in Shijiazhuang was studied by the mass loss determination of 45 steel, A3 steel, 20 steel and gun steel.
但由于COD规装卡位置或试样型式的改变,必须求出相应的柔度系数才能方便地进行腐蚀环境下的各类试验。
According to changing of location for COD gauge installed in test sample type, must resolve the compliance coefficient, which can be suitable to carry out the testing.
针对所制试样,从浸蚀、电化学腐蚀和高温氧化三个方面进行耐蚀性能及其机理的研究。
Corrosion resistance and mechanisms of these alloys were researched through erosion, electrochemical corrosion and high temperature oxidation.
钠腐蚀后,两种钨试样的沿晶脆断特征变得更为显著,为沿晶和穿晶混合型脆性断裂。
The brittle morphologies become much more notable, and appear the inter-and trans-granular fracture mode after sodium corrosion at high temperature for both of W-specimens.
已碳化试样在标养室中养护时,在无阻锈剂的试样中,钢筋腐蚀速率较大。
When carbonated samples was cured in standard curing room, corrosion rate of steel was high without inhibitors.
针对铝合金腐蚀平均速率与瞬时速率的差异,根据腐蚀过程中试样横截面的变化与欧姆电阻的对应关系,建立了新的腐蚀速率计算方法。
Based on the relationship between cross section variety and resistance of sample, a new formula was put forward to calculate the instantaneous corrosion rate of aluminum alloy.
采用SEM、XRD、XPS、EIS等分析手段,对试样腐蚀产物膜进行组织结构及电化学交流阻抗分析。
The structure and electrochemical behavior of the corrosion scale were analyzed by SEM, XRD, XPS and EIS.
通过渗氢试样的常温力学性能试验和双悬臂梁试样在高温高压高纯水中的腐蚀试验来研究t 225ng钛合金的氢脆行为。
Through the tests of mechanical properties of charging hydrogen and the corrosion tests in loop water of high temperature and high pressure, hydrogen brittleness of T225NG Ti-alloy was studied.
研究了温度对试样自腐蚀电位的影响; 不同热处理方法对试样自腐蚀电位和析氢电位的影响。
The effect of temperature and thermal treatment procedure on the self-corrosion potential and the hydrogen-cherged potential is studied.
采用动电位扫描法对成膜碳钢试样测试的阳极极化曲线显示,碳钢在腐蚀介质中处于钝化状态。
The anticathode of polarization curve of carbon steel with SAMs by changed - electrical voltage method suggested that carbon steel is passivation state in the rust medium.
不进行应力腐蚀试验的激光焊接铸钛试样作为对照组。
Results After stress-corrosion test, there was no discoloration in the weld zone of the laser-welded cast samples.
恒电位深腐蚀法是目前已知的制备扫描电镜用试样的最有效的方法。
The stationary potential deep-etching method is most available than other method to prepare for metallograph analyses on SEM.
铜钢试样特别是良好的,因为一般钢材腐蚀剂不会攻击铜。
Copper is especially good for steel specimens since the usual etchants for steels will not attack the copper.
先经化学腐蚀再在试样臂上用纯氧加热可以有效地消除试样的表面沾污。
The surfaces of the sample are decontaminated effectively first by chemical etching and then by heating directly in a stream of oxygen after placing sample on loading arm.
以穆斯堡尔内转换电子谱第一次测定了海水腐蚀后两种不同耐蚀性低合金钢试样的阻挡层铁锈的组成。
Phase composition of the barrier layer rusts of two alloy steels with different corrosion resistance in sea water was determined by conversion electron Mossbauer spectroscopy for the first time.
本文利用扫描电镜对深腐蚀蠕墨铸铁试样中的蠕虫状石墨及其与片状石墨、球状石墨之间的过渡形态进行了观察研究。
The paper investigated the vermicular graphite and its transition morphologies to lamellar and spheroidal graphite in deep-etched compacted vermicular iron bars by SEM.
X80钢的耐蚀性及腐蚀形态与各试样表面生成的腐蚀产物膜的完整性和致密性有关。
The corrosion resistance and corrosion morphology of X80 steel samples is dependent on the integrality and compactness of corrosion product films.
采用双环电化学动电位再活化法(EPR法)研究316l奥氏体不锈钢扩散连接试样与母材的晶间腐蚀行为。
Intergranular corrosion for diffusion bonded joints and base materials of 316l stainless steel was investigated by double loop EPR test.
目前国内关于材料在腐蚀环境低周疲劳性能研究数据很少,这是由于介质具有腐蚀性,对试验设备、试样、试验环境及人员都有很高要求,试验难度很大,试验成功者廖廖无几。
This is because the mediums are corrosive, which has great requests for test equipments, test specimens, the experimental environment and testers. It is big difficulty to carry out the experiment.
扫描电镜显示,试样表面的腐蚀产物膜呈网格状,裂纹呈树枝型,腐蚀产物膜上的沉积物呈花朵状;
SEM showed that sample surface of passive film was grid, and crack was branch-type, and sediment on passive film was bloom shape.
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