SEM is used to observe the morphology of the samples after the corrosion test, and the effects of ZrO2 concentration on the corrosion resistance of the nano composite electroforming deposits are analyzed, and its corrosion resistance mechanism is discussed.

用SEM觀察了各種樣品腐蝕后的表面形貌最新欧美精品免费A片在线播放，分析了納米ZrO2微粒復(fù)合量對(duì)復(fù)合電鑄層耐蝕性的影響，同時(shí)對(duì)納米復(fù)合電鑄層的腐蝕機(jī)理進(jìn)行了初步探討。

According to corrosion damage distribution law, cumulative distribution law of corrosion damage is conducted by four membership functions of fuzzy equivalent corrosion damage.

結(jié)合腐蝕損傷的分布規(guī)律，選用了4種形式的模糊等效腐蝕損傷的隸屬函數(shù)來(lái)表示腐蝕損傷的累積分布規(guī)律亚洲一区中文字幕。

The three fail form of scoring,fillister and corrosion for 127 mm(5) S135 drill rod joint ,corrosion rate and corrosion production have been researched by means of analysis of chemical composition and microstructure,testing of mechanical property.

通過(guò)化學(xué)成分分析、力學(xué)性能測(cè)試色偷拍91视频、組織結(jié)構(gòu)分析和高溫高壓模擬試驗(yàn)亚洲黄色视频一区二区三区，對(duì)127 mm(5)S135鉆桿接頭內(nèi)壁出現(xiàn)劃痕、凹槽和腐蝕三種失效形式69欧美，鉆桿的腐蝕速率和腐蝕產(chǎn)物進(jìn)行分析研究。

It is discussed each hydronium effect to corrosion action of extraction liquid under wells and the results show that the shape and its structure of surface corrosion produced films of N80 steel to metal has serious effect of further corrosion.

美國(guó)的Mississipi和Uttle Greek油田在進(jìn)行COZ 驅(qū)油試驗(yàn)時(shí)發(fā)現(xiàn)精品在线一区热点，在未采取CO：腐蝕防護(hù)措施時(shí)强奸乱论中文字幕，生產(chǎn)井的管壁不到五個(gè)月便腐蝕穿孔，相當(dāng)于腐蝕速率為12.sm而a一线高清视频免费播放手机现在黄色网一急片。

Wear and corrosion involve mechanical and electrochemical mechanisms, and the combined action of these mechanisms often result in significant mutual reinforcement. To measure the effect on wear-corrosion resistance of the chemical and abrasion wear separately at the same time, wear-corrosion synergism rate is selected to indicate the nature and degree of the chemical and abrasion wear.

腐蝕磨損是同時(shí)涉及力學(xué)因素和電化學(xué)因素的復(fù)雜的材料的流失過(guò)程A级黄色视频图片，通常條件下，腐蝕磨損不是純磨損和純腐蝕的簡(jiǎn)單疊加精品国产玖玖玖91，還有兩者間的協(xié)同作用99riav。com，為定量描述腐蝕與磨損的促進(jìn)程度、進(jìn)一步完善腐蝕磨損機(jī)理日韩在线精品视频，本文利用腐蝕磨損協(xié)同作用率值的大小來(lái)分析腐蝕和磨損的交互作用程度在线观看视频在线高清黄色网站，結(jié)果表明：本文制備的鍍層，在5％H_2SO_4溶液中腐蝕磨損時(shí)插插网站，機(jī)械磨損是造成鍍層表面材料流失的主要原因综合图区欧美，腐蝕和磨損的協(xié)同作用為次要因素。

It has both good wear resistance, and good corrosion resistance and strong resistance to pitting corrosion, intergranular corrosion resistance.

它既有良好的耐磨性美国色播AV，又有良好的耐腐蝕性和較強(qiáng)的抗點(diǎn)蝕国产人看人碰人摸人澡、抗晶間腐蝕能力。

Using metallographic analysis, original structure and surface deficiency were obtained, the influence of the structure on corrosion speed was settled, the surface macrography patterns of welded joint in different temperature and concentration were got. Microscopic patterns after corrosion in different condition were gained by SEM, though which the influence of temperature, concentration and structure on corrosion was easily observed.

采用金相分析法中文字幕在线永久在线57，不僅獲得了腐蝕前焊接接頭的原始金相組織以及表面缺陷欧美午夜性爱电影，確定了組織及缺陷對(duì)腐蝕速率的影響，而且得到了焊接接頭在不同溫度国产在线观看无码免费的网站、濃度條件下腐蝕后的宏觀形貌www.18Aⅴ.Com视频，采用場(chǎng)發(fā)射掃描電子顯微鏡得到了焊接接頭在不同條件下腐蝕后的微觀形貌，從而直觀地得到了溫度五月天色色网站、濃度以及組織對(duì)焊接接頭腐蝕速率的影響三级在线视频观看国产。

When Ts is 850 ℃,grains are fined and the size of βphase and the distance betweenβphase pasticles are small.The corrosion barrier effect ofβ phase onαphase is enhanced and the iron content does not increase much at this temperature.So the corrosion resistance is improved.The corrosion resistance of AZ70 alloy falls off when Ts is 890 ℃,which attributes to the presence of microporosity,hot cracking and increase of iron content.

過(guò)熱溫度為810 ℃時(shí)，熱速處理對(duì)合金耐腐蝕性能的改善作用并不大；過(guò)熱溫度為850 ℃時(shí)日韩欧美黄片在线一区，熱速處理顯著細(xì)化了合金晶粒3DA片区，β相的尺寸和間距變小，β相對(duì)α相腐蝕的阻礙作用增加日韩高清AV在线电影网，而且合金中的鐵含量并沒有提高日韩网友自拍区在线观看，從而改善了合金在試驗(yàn)條件下的耐腐蝕性能；過(guò)熱溫度為890 ℃時(shí)亚洲女妇在线观看视频，組織中存在熱裂紋和顯微疏松缺陷黄色视频在线免费观看国产盗摄，合金含鐵量顯著增高，合金的耐腐蝕性能下降www...一级国产。

It is common that reinforced concrete bridges are damaged with steel corrosion which not only reduces the strength of structures but also changes their failure mode if there exists nonsymmetry corrosion developed to some extent. Nonsymmetry corrosion can translate ductile fracture into brittle failure and translate flexural failure into torque failure, etc.

前言鋼筋銹蝕是鋼筋混凝土橋梁結(jié)構(gòu)中最常見的一種損傷形式6080毛片，鋼筋銹蝕不僅削弱鋼筋有效面積，而且能夠引起鋼筋體積膨脹www.妓女网，使混凝土保護(hù)層開裂欧美精品538在线视频，為腐蝕介質(zhì)提供更加便易的入侵渠道，從而加速結(jié)構(gòu)損傷欧美AA级黄片，導(dǎo)致結(jié)構(gòu)提前破壞色色色色色色AAAAAAA。

By confecting simulation corrosion solution of pressuring air cooler system of Maoming Petrification and using CMB-1510B portable instantaneous corrosion rate meter, the experimental inhibition efficiency of organic corrosion inhibitor of Na2S and its compound was evaluated.

在實(shí)驗(yàn)室模擬茂名石化加壓空冷器系統(tǒng)的腐蝕溶液，運(yùn)用CMB-1510B便攜式瞬時(shí)腐蝕速度測(cè)量?jī)x評(píng)價(jià)了多硫化鈉復(fù)合緩蝕劑的緩蝕性能国产永久在线更新。