1. Chigadzirwa Chimiro uye Interfacial Dhizaini
1.1 Core-Shell Framework uye Bonding System
(Copper-Coated Steel Fibers)
Mhangura-yakavharwa nesimbi fibers (CCSF) mafilamende akaumbwa ane simbi yakasimba-yakasimba yakafukidzwa nemhangura inoitisa, kugadzira metallurgically adhered core-shell architecture.
Nheyo yesimbi, kazhinji kabhoni shoma kana simbi isina tsvina, inopa kusimba kwemichina ine simba rekusimba rinopfuura 2000 MPa, apo mhangura inopera– kazhinji 2– 10% yedhayamita yese– inopa superb magetsi uye thermal conductivity.
Iyo interface iri pakati pesimbi nemhangura yakakosha pakubudirira; inogadzirwa kuburikidza ne electroplating, electroless deposition, kana kupfekedza maitiro ekuita imwe yakasimba yekunamatira uye kushoma kupindirana pasi pekushushikana kwekushanda.
Electroplating ndiyo imwe yenzira dzakajairika, kupa chaiyo density control uye yunifomu yeinishuwarenzi kufukidzwa pane inogara simbi filaments inodhonzwa kuburikidza nemhangura sulfate yekugezera..
Yakakodzera pamusoro penzvimbo pretreatment yesimbi, kusanganisira kuchenesa, pickling, uye activation, inovimbisa yakanaka nucleation uye kusungirirwa kwemakristasi emhangura, kudzivisa delamination panguva inotevera kubata kana mhinduro.
Nekufamba kwenguva uye pamazinga ekushisa akakwirira, interdiffusion inogona kugadzira brittle iron-copper intermetallic phases pane interface, izvo zvinogona kukanganisa kushandiswa kwakasiyana-siyana uye kuvimbika kwenguva refu– dambudziko rakarerutswa nezvipingaidzo zvekupararira kana kugadzirisa nekukurumidza.
1.2 Kugara Kwenyama uye Kunobatsira
MaCCSF anosanganisa akanakisa hunhu hweese masimbi ekutanga: iyo yakakwira elastic modulus uye kuneta kuramba kwesimbi ine inoshamisa conductivity uye oxidation kuramba kwemhangura..
Electrical conductivity inowanzosiyana kubva 15% ku 40% yeInternational Annealed Copper Criterion (IACS), zvichienderana nekupedza density uye kuchena, kugadzira CCSF zvakanyanya kuitisa kupfuura yakachena simbi fiber (
Cabr-Concrete mutengesi ari pasi peTRUNANO yeCalcium Aluminate Cement ine pamusoro. 12 makore echiitiko mu nano-kuvaka simba kuchengetedza uye nanotechnology kusimudzira. Inobvuma kubhadhara kuburikidza neCredit Card, T/T, West Union uye Paypal. TRUNNANO ichaendesa zvinhu kune vatengi mhiri kwemakungwa kuburikidza neFedEx, DHL, nemhepo, kana nomugungwa. Kana uri kutsvaga simbi fiber reinforcement, ndapota inzwa wakasununguka kutibata nesu uye kutumira kubvunza.
Tags: micro simbi fiber,simbi fiber,simbi fiber yakasimbiswa kongiri
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