Iyo musimboti wedhaimani mulching layer yekuvandudza kugona kwepakeji yekuisa

1. Kugadzirwa kwe carbide-coated diamond

Nheyo yekusanganisa simbi poda nedhaimani, kupisa kune yakatarwa tembiricha uye kuvharirwa kweimwe nguva pasi pevacuum. Panguva iyi tembiricha, mhute yekumanikidza yesimbi inokwana kuvhara, uye panguva imwe chete, simbi inoshambadzirwa pamusoro pedhaimondi kuti iite dhaimondi rakavharwa.

2. Kusarudzwa kwesimbi yakavharwa

Kuti uite kuti dhaimondi rive rakasimba uye rakavimbika, uye kuti unzwisise zviri nani pesvedzero yehuputi hwekugadzira pane simba rekuvhara, simbi yekuputira inofanira kusarudzwa. Tinoziva kuti dhaimondi is alloomorphism yeC, uye latisi yaro inogara tetrahedron, saka musimboti wekuputira simbi yakagadzirwa ndeyekuti simbi ine hukama hwakanaka hwekabhoni. Nenzira iyi, pasi pemamwe mamiriro ezvinhu, kupindirana kwemakemikari kunoitika pachiratidziro, kuumba chisungo chakasimba chemakemikari, uye Me-C membrane inoumbwa. The infiltration and adhesion theory mu diamond-metal system inonongedza kuti kemikari kupindirana kunoitika chete kana adhesion inoshanda AW> 0 uye inosvika pane imwe kukosha. Ipfupi periodic boka B simbi zvinhu mu periodic tafura, akadai Cu, Sn, Ag, Zn, Ge, etc. vane hurombo affinity nokuda C uye yakaderera adhesion basa, uye zvisungo akaumbwa ari molecular bond kuti haana kusimba uye haafaniri kusarudzwa; masimbi ekushandura ari mutafura yakareba ye periodic, yakadai seTi, V, Cr, Mn, Fe, nezvimwewo, vane basa guru rekunamatira nehurongwa hweC. Kusimba kwekubatana kweC uye kushanduka kwesimbi kunowedzera nenhamba ye d layer electrons, saka Ti uye Cr inonyanya kukodzera kuvhara simbi.

3. Kuedza kwemwenje

Patembiricha ye8500C, dhaimondi harigone kusvika kune simba remahara reakabatidzwa kabhoni maatomu pamusoro pedhaimondi uye simbi poda kuti igadzire simbi carbide, uye ingangoita 9000C kuwana simba rinodiwa pakuumbwa kwesimbi carbide. Nekudaro, kana tembiricha yakanyanyisa, inoburitsa kurasikirwa kwekupisa kwedhaimondi. Tichifunga nezve pesvedzero yekuyerwa kwekuyerwa kwetembiricha uye zvimwe zvinhu, tembiricha yekuyedza yekuputira inoiswa pa9500C. Sezvingaonekwa kubva pahukama pakati penguva yekuisa uye yekumhanyisa kumhanya (pazasi),? Mushure mekusvika kune simba remahara resimbi carbide chizvarwa, maitiro anoenderera nekukurumidza, uye nechizvarwa checarbide, chiyero chekuita chinodzikira zvishoma nezvishoma. Hapana mubvunzo kuti nekuwedzera kwenguva yekudzivirira, kuwanda uye hutano hwehupamhi huchavandudzwa, asi mushure memaminitsi makumi matanhatu, hutano hwehutano hahuna kunyanya kukanganiswa, saka tinoisa nguva yekudzivirira seawa 1; iyo yakakwirira vacuum, zviri nani, asi zvishoma kune mamiriro ekuedzwa, isu tinowanzo shandisa 10-3mmHg.

Package inset kugona kusimudzira musimboti

Migumisiro yekuedza inoratidza kuti muviri we "fetus" une simba kune dhaimondi rakavharwa pane dhaimondi risina kuvharwa. Chikonzero chekugona kwakasimba kwekubatanidzwa kwefetus body kudhaimondi rakavharwa ndechekuti, pachezvake, pane kuremara kwepamusoro uye madiki-akatsemuka pamusoro kana mukati mechero dhaimondi rekugadzira risina kuvharwa. Nekuda kwekuvapo kwema microcracks aya, simba redhaimondi rinodzikira, kune rumwe rutivi, C element yedhaimani haiwanzoita nezvikamu zvemuviri we "fetus". Naizvozvo, muviri wetai wedhaimondi risina kuvharwa inongova mechanical extrusion package, uye rudzi urwu rwekuisa pasuru haruna simba zvakanyanya. Kamwe kuremerwa, iwo ma microcracks ari pamusoro anotungamira mukusangana kwekushushikana, zvichikonzera kudzikira kwepakeji yekuisa kugona. Mhosva yedhaimani yakawandisa yakasiyana, nekuda kwekuputirwa kwefirimu resimbi, iyo diamond lattice kukanganisa uye micro cracks inozadzwa, kune rumwe rutivi, simba redhaimondi rakaputirwa rinowedzerwa, kune rumwe rutivi, rakazadzwa ne micro cracks, hapasisina kushushikana mupfungwa chiitiko. Zvinotonyanya kukosha, kupinda kwesimbi yakasungirirwa mumuviri wevhiri inoshandurwa kuita kabhoni padhaimani pamusoroKupinzwa kwemakomisheni. Mhedzisiro ndeye simbi yekubatanidza padhaimani wetting angle kubva kupfuura zana kusvika pasi pe500, yakavandudza zvakanyanya simbi yekubatanidza yekunyorova nedhaimani, ita muviri wetai wepakeji yedhaimondi yakavharidzirwa yakaiswa neyekutanga extrusion mechanical package mu bonding package, iyo inovhara yedhaimani nevhiri bond yemuviri, nekudaro inovandudza muviri we fetal.

Package insetting kugona. Panguva imwecheteyo, isu tinotenda zvakare kuti zvimwe zvinhu zvakaita senge sintering paramita, yakavharwa diamond particle size, giredhi, fetal body particle size uye zvichingodaro zvine imwe mhedzisiro pane yekuisa pasuru simba. Iyo yakakodzera sintering pressure inogona kuwedzera kudzvanya density uye kunatsiridza kuoma kwefetus body. Yakakodzera sintering tembiricha uye nguva yekumisa inogona kusimudzira tembiricha yekupisa kemikari yekuumbwa kwevhiri remuviri uye yakavharwa simbi nedhaimani, kuitira kuti bond package igadzirwe zvakasimba, giredhi redhaimani rakanaka, chimiro chekristaro chakafanana, chikamu chakafanana chinonyungudika, uye seti yepakiti iri nani.

Kutorwa kubva kuLiu Xiaohui