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href="http://www.cdcfah.com/cp/second-jxjxysb_drsb/">電熱設(shè)備</a>?<a href="http://www.cdcfah.com/cp/third-drsb_redianou/">熱電偶</a>?重慶電廠氮化硅保護(hù)管零售鄒平奧翔硅碳供應(yīng)</p><div id="mwyacol" class="leftbox clearfix"><h1>重慶電廠氮化硅保護(hù)管零售鄒平奧翔硅碳供應(yīng)</h1><div id="hro323x" class="proBig"><div id="m3he7a7" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/7/27/16/636998424404004729_zbwuzi_4901460.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="wqc8vmy" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/7/27/16/636998424404004729_zbwuzi_4901460.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="332fzah" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>山東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>重慶電廠氮化硅保護(hù)管零售</p><p><span>***更新：</span>2020-06-07 15:02:46</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="fpmbdfh" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">鄒平縣奧翔硅碳制品有限公司</a></p><p><span>聯(lián)系人：</span>張洪恩</p><p><span>郵箱: </span>13884861614@163.com</p><p><span>電話: </span>13884861614</p><p><span>傳真: </span>0543_4534117</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0543-4533667</p><p><span>地址: </span>山東省鄒平市臨池鎮(zhèn)望京村</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="smoqn78" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="fel8hoq" class="box"><p><p style="text-indent:25px">氮化硅的強(qiáng)度很高，尤其是熱壓氮化硅，是世界上**堅(jiān)硬的物質(zhì)之一。它極耐高溫，強(qiáng)度一直可以維持到1200℃的高溫而不下降，受熱后不會(huì)熔成融體，一直到1900℃才會(huì)分解，并有驚人的耐化學(xué)腐蝕性能，能耐幾乎所有的無機(jī)酸和30%以下的燒堿溶液，也能耐很多有機(jī)酸的腐蝕；同時(shí)又是一種高性能電絕緣材料。氮化硅 - 性質(zhì)　化學(xué)式Si3N4。白色粉狀晶體;熔點(diǎn)1900℃,密度3，重慶電廠氮化硅保護(hù)管零售.44克/厘米(20℃)；有兩種變體：α型為六方密堆積結(jié)構(gòu)；β型為似晶石結(jié)構(gòu)，重慶電廠氮化硅保護(hù)管零售，重慶電廠氮化硅保護(hù)管零售。氮化硅有雜質(zhì)或過量硅時(shí)呈灰色。主要應(yīng)用于高溫行業(yè)。其中碳化硅保護(hù)管占了主要的位置。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶電廠氮化硅保護(hù)管零售" src="http://tyunfile.71360.com/UpLoadFile/2019/7/27/16/636998424404004729_zbwuzi_4901460.jpg"></div><p>而且硅碳棒通電后容易崩裂；硅碳棒在使用前要進(jìn)行配阻。先阻值相同或接近的硅碳棒連接在一起；為硅碳棒配備調(diào)壓裝置。送電初期電壓為其正常工作電壓的一半，穩(wěn)定一段時(shí)間以后再逐漸提高電壓。這樣硅碳棒就不會(huì)因?yàn)榧眲∩郎囟鴮?dǎo)致斷裂；硅碳棒連續(xù)使用壽命長(zhǎng)；間斷使用壽命短；硅碳棒使用時(shí)要選擇合理的表面負(fù)荷密度和使用溫度。使用溫度應(yīng)不大于1650℃；在有害氣體環(huán)境中使用更要防止硅碳棒與有害氣體發(fā)生化學(xué)反應(yīng)；更換硅碳棒時(shí)，應(yīng)選用和爐內(nèi)運(yùn)行的硅碳棒的電阻相接近的硅碳棒，必要時(shí)更換整爐硅碳棒，這樣有利于提高硅碳棒的使用壽命，卸不來的硅碳棒，如果電阻值合適，還可以在電爐運(yùn)行中后期換上使用；防止硅碳棒濺上熔融金屬，濺上熔融金屬容易導(dǎo)致斷棒；防止堿、堿土金屬和堿性氧化物腐蝕硅碳棒；經(jīng)常觀察電流表、電壓表及溫度表的讀數(shù)是否正常；冷端部夾具是否松運(yùn)、氧化發(fā)黑或打火；硅碳棒是否斷裂；硅碳棒發(fā)熱部紅熱是否均勻。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶電廠氮化硅保護(hù)管零售" src="https://tyunfile.71360.com/UploadFile/zbwuzi/637238611048789062/8167821.jpg"></div><p> 氮化硅粉、氮化硅性能原理（1）、作為人工合成材料之一的氮化硅粉陶瓷材料，具有高比強(qiáng)、高比模、耐高溫、抗氧化和耐磨損以及抗熱震等優(yōu)良的綜合性能，普遍應(yīng)用于機(jī)械、化工、海洋工程、航空航天等重要領(lǐng)域。對(duì)多晶材料而言，晶界狀態(tài)是決定其電性能、熱性能和力學(xué)等性能的一個(gè)極其重要的因素。對(duì)于氮化硅粉陶瓷來說，晶界強(qiáng)度是決定其能否作為高溫工程材料應(yīng)用的關(guān)鍵（2）、由于氮化硅粉分子的si―N鍵價(jià)鍵成分為70％，離子鍵成分為30％t引，因而是高共價(jià)性化合物，而且氮原子和硅原子的自擴(kuò)散系數(shù)很小，致密化所必需的體積擴(kuò)散及晶界擴(kuò)散速度、燒結(jié)驅(qū)動(dòng)力很小，只有當(dāng)燒結(jié)溫度接近氮化硅分散溫度(大于1850℃)時(shí)，原子遷移才有足夠的速度。這決定了純氮化硅不能靠常規(guī)固相燒結(jié)達(dá)到致密化，所以除用硅粉直接氮化的反應(yīng)燒結(jié)外，其它方法都需采用燒結(jié)助劑，利用液相燒結(jié)原理進(jìn)行致密化燒結(jié)（3）、因此，研究燒結(jié)助劑對(duì)氮化硅陶瓷致密化燒結(jié)的影響顯得尤為重要。氮化硅陶瓷作為新型的結(jié)構(gòu)材料，受到越來越普遍的重視.1、激光粒度儀就可以，國(guó)內(nèi)普遍都用此種原理的儀器測(cè)量粒度。2、可以通過XRD衍射來確定其含量。3、其次，就是憑經(jīng)驗(yàn)確定。氮化硅粉，呈淺灰白色。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶電廠氮化硅保護(hù)管零售" src="https://tyunfile.71360.com/UploadFile/zbwuzi/637238611242919922/2447803.jpg"></div></p><br /><p>文章來源地址: 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