廣通工程材(cai)料(廣州市分公司(si))坐落在萊蕪區鳳城工業園。 公司主要產品有： 復合土(tu)工膜。 公司在發展過程中，始終秉持創新驅動(dong)、品牌引領，不斷提高產(chan)(chan)品質量和管理水(shui)平(ping)，堅持走科(ke)技創新規模發展之路，企業核(he)心競爭(zheng)力，產(chan)(chan)品市場占有率(lv)逐年上升，經營(ying)效益穩(wen)步提高。
由(you)于先(xian)后凝(ning)(ning)(ning)(ning)(ning)(ning)固(gu)(gu)的(de)(de)(de)(de)固(gu)(gu)相(xiang)(xiang)在成(cheng)分(fen)上的(de)(de)(de)(de)差(cha)異,不同(tong)(tong)成(cheng)分(fen)固(gu)(gu)相(xiang)(xiang)受(shou)侵蝕程度(du)將不同(tong)(tong),因(yin)而在我(wo)們觀察合(he)(he)金(jin)(jin)的(de)(de)(de)(de)顯組(zu)織時(shi)就會(hui)觀察到典(dian)型的(de)(de)(de)(de)枝(zhi)晶(jing)(jing)(jing)(jing)組(zu)織,枝(zhi)晶(jing)(jing)(jing)(jing)臂的(de)(de)(de)(de)成(cheng)分(fen)與枝(zhi)晶(jing)(jing)(jing)(jing)同(tong)(tong)胞間的(de)(de)(de)(de)成(cheng)分(fen)(B組(zu)元含量高(gao))不同(tong)(tong),因(yin)而顯示出不同(tong)(tong)的(de)(de)(de)(de)顏色(se)。這(zhe)種(zhong)因(yin)非平(ping)(ping)衡(heng)(heng)(heng)凝(ning)(ning)(ning)(ning)(ning)(ning)固(gu)(gu)(結晶(jing)(jing)(jing)(jing))導致的(de)(de)(de)(de)晶(jing)(jing)(jing)(jing)粒內成(cheng)分(fen)不均(jun)勻(yun)的(de)(de)(de)(de)現象稱晶(jing)(jing)(jing)(jing)內偏(pian)析或枝(zhi)晶(jing)(jing)(jing)(jing)偏(pian)析。紫銅止(zhi)水片Cu-Ni合(he)(he)金(jin)(jin)鑄造(zao)后的(de)(de)(de)(de)顯組(zu)織,白色(se)枝(zhi)干含鎳較(jiao)高(gao),周圍黑色(se)部分(fen)含銅較(jiao)高(gao),但均(jun)為(wei)(wei)(wei)(wei)銅鎳a固(gu)(gu)溶(rong)體(ti)。一包晶(jing)(jing)(jing)(jing)系(xi)相(xiang)(xiang)圖和某(mou)合(he)(he)金(jin)(jin)凝(ning)(ning)(ning)(ning)(ning)(ning)固(gu)(gu)時(shi)可(ke)能的(de)(de)(de)(de)非平(ping)(ping)衡(heng)(heng)(heng)固(gu)(gu)相(xiang)(xiang)線軌(gui)跡。與勻(yun)晶(jing)(jing)(jing)(jing)系(xi)合(he)(he)金(jin)(jin)類似,a1-a4表(biao)示x合(he)(he)金(jin)(jin)凝(ning)(ning)(ning)(ning)(ning)(ning)固(gu)(gu)時(shi)固(gu)(gu)相(xiang)(xiang)(a)平(ping)(ping)均(jun)成(cheng)分(fen)的(de)(de)(de)(de)走向,即(ji)非平(ping)(ping)衡(heng)(heng)(heng)固(gu)(gu)相(xiang)(xiang)線。x合(he)(he)金(jin)(jin)按平(ping)(ping)衡(heng)(heng)(heng)態(tai)凝(ning)(ning)(ning)(ning)(ning)(ning)固(gu)(gu)時(shi),固(gu)(gu)相(xiang)(xiang)點溫(wen)度(du)應(ying)為(wei)(wei)(wei)(wei)T3,凝(ning)(ning)(ning)(ning)(ning)(ning)固(gu)(gu)完(wan)(wan)畢應(ying)為(wei)(wei)(wei)(wei)a單相(xiang)(xiang)固(gu)(gu)溶(rong)體(ti)晶(jing)(jing)(jing)(jing)粒。但在非平(ping)(ping)衡(heng)(heng)(heng)凝(ning)(ning)(ning)(ning)(ning)(ning)固(gu)(gu)的(de)(de)(de)(de)情(qing)況(kuang)下(xia),x合(he)(he)紫銅止(zhi)水片Cu30Ni合(he)(he)金(jin)(jin)鑄造(zao)顯金(jin)(jin)冷至T4溫(wen)度(du)時(shi),剩(sheng)余(yu)的(de)(de)(de)(de)液相(xiang)(xiang)L4將與部分(fen)固(gu)(gu)相(xiang)(xiang)a4發(fa)生包晶(jing)(jing)(jing)(jing)反應(ying),即(ji)a4+L4→B,完(wan)(wan)成(cheng) 的(de)(de)(de)(de)凝(ning)(ning)(ning)(ning)(ning)(ning)固(gu)(gu)過(guo)(guo)程,因(yin)此(ci)(ci)該合(he)(he)金(jin)(jin)的(de)(de)(de)(de) 凝(ning)(ning)(ning)(ning)(ning)(ning)固(gu)(gu)溫(wen)度(du)為(wei)(wei)(wei)(wei)T4,并產生了一種(zhong)通過(guo)(guo)包晶(jing)(jing)(jing)(jing)反應(ying)而得到的(de)(de)(de)(de)新相(xiang)(xiang)B。此(ci)(ci)種(zhong)B相(xiang)(xiang)為(wei)(wei)(wei)(wei)非平(ping)(ping)衡(heng)(heng)(heng)相(xiang)(xiang),因(yin)為(wei)(wei)(wei)(wei)按平(ping)(ping)衡(heng)(heng)(heng)態(tai),該相(xiang)(xiang)在x合(he)(he)金(jin)(jin)中是(shi)不存在的(de)(de)(de)(de)。
