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src="http://tyunfile.71360.com/UpLoadFile/2019/7/27/16/636998403242478978_zbwuzi_7595535.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="jbzhflz" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/7/27/16/636998403242478978_zbwuzi_7595535.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="t7n79rn" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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>黑龍江碳化硅結(jié)合氮化硅供應(yīng)商,碳化硅結(jié)合氮化硅</p><p><span>***更新：</span>2020-08-13 09:00:55</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="pt9rhvt" 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: </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="rfljpnl" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="9bfv9lz" class="box"><p><p> 氮化硅結(jié)合碳化硅材料的氮壓控制燒制時我們的實踐經(jīng)驗，根據(jù)進(jìn)氣量推算，當(dāng)爐內(nèi)的總硅量已被氮化80%以上時，溫度就可超過硅的熔點，達(dá)到比較高溫度范圍時可根據(jù)總的耗氮量來決定是否停爐。氮化硅結(jié)合碳化硅復(fù)合材料在氮化燒成時，黑龍江碳化硅結(jié)合氮化硅供應(yīng)商，制品由表及里存在N2和反應(yīng)生成物的濃度梯度，它們的方向相同。氮化硅結(jié)合碳化硅復(fù)合材料在氮化燒成中，爐內(nèi)N2的消耗量與溫度形成一種表面平衡狀態(tài)，但實質(zhì)上是硅被不斷氮化的連續(xù)過程。通過對窯爐內(nèi)氮分壓的控制來實施對窯爐升溫的控制，也就對氮化反應(yīng)速度實施了控制，從而避免了燒成中的微觀結(jié)構(gòu)缺點，能夠制得由外到里氮化率梯度趨近于零的產(chǎn)品，黑龍江碳化硅結(jié)合氮化硅供應(yīng)商。我廠專業(yè)生產(chǎn)氮化硅結(jié)合碳化硅磚、氮化硅保護(hù)管、碳化硅保護(hù)管等產(chǎn)品，是山東率先生產(chǎn)氮化硅坩堝、氮化硅異型件、硅碳棒保護(hù)管和熱電偶保護(hù)管的廠家，黑龍江碳化硅結(jié)合氮化硅供應(yīng)商。奧翔硅碳嚴(yán)格控制原材料的選取與生產(chǎn)工藝的每個環(huán)節(jié)，保證產(chǎn)品質(zhì)量不出問題。黑龍江碳化硅結(jié)合氮化硅供應(yīng)商</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="黑龍江碳化硅結(jié)合氮化硅供應(yīng)商,碳化硅結(jié)合氮化硅" src="http://tyunfile.71360.com/UpLoadFile/2019/7/27/16/636998403242478978_zbwuzi_7595535.jpg"></div><p> 我們經(jīng)過對氮化硅結(jié)合碳化硅材料進(jìn)行的氮化反應(yīng)的熱力分析，得出SiO和N2的反應(yīng)是容易進(jìn)行的。由于是氣-氣反應(yīng)，反應(yīng)動力學(xué)上也同樣容易進(jìn)行，所以SiO與N2反應(yīng)生成Si3N4的速度必然很快。反應(yīng)生成Si3N4后放出O2再與Si反應(yīng)生成SiO，這一反應(yīng)過程反復(fù)進(jìn)行，促成大量Si3N4生成并以纖維狀存在于SiC顆粒間界。Si3N4-SiC復(fù)合材料中，存在間接反應(yīng)和直接反應(yīng)，間接反應(yīng)是Si先與氣氛中的殘余O2反應(yīng)生成氣態(tài)SiO，再與N2生成Si3N4，產(chǎn)物為纖維狀。間接反應(yīng)降低了氧分壓，提供了Si與N2直接生成Si3N4的條件，其產(chǎn)物為柱狀，混合存在于結(jié)構(gòu)體的基質(zhì)中。通過以上對氮化硅結(jié)合碳化硅反應(yīng)機理的表述，我們在生產(chǎn)此材料制品過程中得到一個提示：氮化硅結(jié)合碳化硅制品在氮化過程中由于制品的表面與中心存在著氮化率梯度，所以制品的壁不能過厚，即在制作氮化硅結(jié)合碳化硅脫硫噴嘴的過程中，在滿足制品強度要求的情況下選擇合適的制品壁厚，為了減薄壁厚，以保證生坯的強度，就要對材料配方和漿料的調(diào)制及成形方式進(jìn)行選擇。北京防腐蝕碳化硅結(jié)合氮化硅價格奧翔硅碳產(chǎn)品適用范圍廣，產(chǎn)品規(guī)格齊全，歡迎咨詢。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="黑龍江碳化硅結(jié)合氮化硅供應(yīng)商,碳化硅結(jié)合氮化硅" src="https://tyunfile.71360.com/UploadFile/zbwuzi/637238605112539062/2994706.jpg"></div><p> 氮化硅結(jié)合碳化硅陶瓷材料莫氏硬度約為9，僅次于金剛石和立方氮化硼，其使用壽命是鉻鉬耐磨鑄鋼的3倍；性價比要比采用鉻鉬耐磨鑄鋼高得多，且節(jié)約大量貴重的鉻、鉬等貴重的金屬材料。氮化硅結(jié)合碳化硅陶瓷材料可抵抗除氫氟酸(HF)以外的所有強弱酸的腐蝕，尤其是及大部分熔鹽、常溫鹵素和堿的腐蝕。氮化硅結(jié)合碳化硅屬于非氧化物陶瓷材料。同氧化物陶瓷不同，非氧化物陶瓷材料原子間主要是以共價鍵結(jié)合在一起，因而具有較高的硬度、模量、蠕變抗力，并且能把這些性能的大部分保持到高溫，這是氧化物陶瓷無法比擬的。但它們的燒結(jié)非常困難，必須在極高溫度(1500～2500℃)并有燒結(jié)助劑存在的情況下才能獲得較高密度的產(chǎn)品，有時必須借助熱壓燒結(jié)法才能達(dá)到希望的密度，所以非氧化物陶瓷的生產(chǎn)成本一般比氧化物陶瓷高。以上是小編為大家簡單講述氮化硅結(jié)合碳化硅材料的性能與其他材料的對比。幾年礦山采選機械因為連續(xù)不斷的工作，不可避免地機械會產(chǎn)生強烈的磨損而迅速失效，除了機械運動部位的磨損之外，礦山作業(yè)環(huán)境中更重要的是物料的摩擦、腐蝕加劇了機械的磨損，不但造成部件更換的經(jīng)濟(jì)損失，而且頻繁檢修也導(dǎo)致過多停工，降低連續(xù)作業(yè)率，消耗大量人力物力。</p><p> 氮化硅結(jié)合碳化硅在氮化爐中燒制時，我們對氮化硅材料氮化燒結(jié)環(huán)境下的研究認(rèn)為在燒成反應(yīng)中存在著間接反應(yīng)和直接反應(yīng)。在反應(yīng)中，作為反應(yīng)的參與者，N2的分壓起著極為重要的作用，但不論氮分壓的大小如何，只要生產(chǎn)Si3N4，那么在坯體內(nèi)就存在著N2的濃度梯度和生成Si3N4的濃度梯度，而且這種濃度梯度的方向是相同的，越是接近坯體表面其兩個組分的濃度越高。要想反應(yīng)不斷向坯體內(nèi)部推進(jìn)就必須確保合適的氮分壓和反應(yīng)溫度。在純Si3N4的氮化燒結(jié)中，通常會發(fā)生“流硅”反應(yīng)而使氮化反應(yīng)受到影響，這是因為氮化反應(yīng)是一個放熱反應(yīng)，為使反應(yīng)完全又將Si粉的粒徑控制在很小范圍內(nèi)，這樣在氮化過程中若控制不當(dāng)時，供給熱量和生成熱量疊加而使溫度達(dá)到了硅的熔點使Si粉熔化而產(chǎn)生所謂的“流硅”現(xiàn)象。在氮化硅結(jié)合碳化硅的氮化燒結(jié)中，Si粉的濃度含量相對較低，而濃度較高的SiC又有著較大的導(dǎo)熱率從而了“流硅”現(xiàn)象的發(fā)生。奧翔硅碳有著質(zhì)量的服務(wù)質(zhì)量和極高的信用等級。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="黑龍江碳化硅結(jié)合氮化硅供應(yīng)商,碳化硅結(jié)合氮化硅" src="http://tyunfile.71360.com/UpLoadFile/2019/7/27/16/636998403242947902_zbwuzi_6035847.jpg"></div><p> 氮化硅結(jié)合碳化硅制品涉及到的主要生產(chǎn)原料有：碳化硅、硅粉、氮氣等添加劑。不同于普通的氮化硅材料制品，氮化硅結(jié)合碳化硅制品所需要的原料必須具有更高的純度。碳化硅的純度應(yīng)達(dá)到，硅粉的純度應(yīng)達(dá)到99%以上，氮氣的純度應(yīng)達(dá)到。除了原料的純度需要進(jìn)行嚴(yán)格的控制之外，生產(chǎn)加工過程中還需要對原料的粒度和顆粒級配進(jìn)行嚴(yán)格的控制。原料的粒度過高將會直接影響胚體成型的體積密度，造成胚體的致密性降低，影響**終的產(chǎn)品質(zhì)量。在原料顆粒級配方面，要注意硅粉的粒度，硅粉的粒度控制可以確保硅粉與氮氣的反應(yīng)效率，但是一味降低硅粉的粒度也會存在一定的負(fù)面影響，即硅粉與氮氣反應(yīng)速率過快，劇烈的反應(yīng)造成反應(yīng)裝置中熱量集聚上升，一旦溫度超過1400℃時，會誘發(fā)碳化硅表面出現(xiàn)流硅現(xiàn)象，反而不利于產(chǎn)品的質(zhì)量控制。另外，在氮化硅結(jié)合碳化硅制品的原料中加入ZrSiO4可以起到改善產(chǎn)品抗氧化性的作用。奧翔硅碳擁有先進(jìn)的產(chǎn)品生產(chǎn)設(shè)備，雄厚的技術(shù)力量。黑龍江碳化硅結(jié)合氮化硅供應(yīng)商</p><p style="text-indent:25px">奧翔硅碳不斷從事技術(shù)革新，改進(jìn)生產(chǎn)工藝，提高技術(shù)水平。黑龍江碳化硅結(jié)合氮化硅供應(yīng)商</p><p style="text-indent:25px">生產(chǎn)氮化硅結(jié)合碳化硅制品時候溫速度太快，造成坯體表面沉積的碳素不能被排除，嚴(yán)重者還會引起坯體表面隆起小泡。解決措施是： 1)制定合理的燒成溫度曲線，保證窯爐內(nèi)升溫速度符合坯體各階段所需要的熱量。 2)控制加煤量，保溫階段縮短還原氣氛的時間，加強坯體的前期氧化。 3)合理調(diào)試窯爐小閘板的開度，達(dá)到窯爐處于一個三種制度相互協(xié)調(diào)的平衡點。 4)燒窯工操作的控制，雖然窯爐設(shè)備的調(diào)試達(dá)到了比較好點，但三種制度都是通過操作來實現(xiàn)的。暗點就是分布于產(chǎn)品表面的黑、灰色小顆粒狀暗點。從表面看暗點與煙熏相伴而生，但又不同于煙熏，而且較煙熏難于控制。暗點缺點無論在煤燒隧道窯還是在燃?xì)馑淼栏G都有不同程度的發(fā)生。分析這種缺點的原因（排除泥、釉料配方的因素）：一是因為前期氧化氣氛不足；二是燒成溫度沒能達(dá)到瓷化所需要的溫度。黑龍江碳化硅結(jié)合氮化硅供應(yīng)商</p><p style="text-indent:25px">鄒平縣奧翔硅碳制品有限公司位于山東省濱州市，注冊資本50-100萬元，旗下?lián)碛?1~100人***專業(yè)的員工。在鄒平奧翔硅碳供應(yīng)近多年發(fā)展歷史，公司旗下現(xiàn)有品牌奧翔硅碳制品等。公司堅持以客戶為中心、硅碳棒，硅碳管，熱電偶保護(hù)管。等直徑硅碳棒，U型硅碳棒，螺紋硅碳棒，碳化硅制品，碳化硅結(jié)合氮化硅，碳化硅保護(hù)管，氮化硅保護(hù)管，碳化硅窯具！硅碳棒夾具，粗端式硅碳棒。門型硅碳棒，槍型硅碳棒，升液管，輻射管市場為導(dǎo)向，重信譽，保質(zhì)量，想客戶之所想，急用戶之所急，全力以赴滿足客戶的一切需要。鄒平縣奧翔硅碳制品有限公司主營業(yè)務(wù)涵蓋[ "硅碳棒廠家", "碳化硅保護(hù)管", "熱電偶保護(hù)管", "碳化硅結(jié)合氮化硅" ]，堅持“質(zhì)量***、質(zhì)量服務(wù)、顧客滿意”的質(zhì)量方針，贏得廣大客戶的支持和信賴。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/900031.html</p></div></div></div></div></div><div id="bhd7f7l" class="page-right twoColRt"><div id="77jzxlb" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="xbzpnjx" class="recomPic 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