TRNG I HC KHOA HC T NHIN THNH PH H CH MINHKHOA KHOA HC VT LIUMn hc: KHOA HC VT LIU C BNTS. TRN TH THANH VN

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Mc tiu:Sau khi hc xong mn ny sinh vin phi: Bit c cu trc v cc tnh cht c trng ca tng loi vt liu. Mi lin quan

gia cu trc v tnh cht ca n Xc nh c cc ch s nh hng s mng, h s xp cht ca mt vi

cu trc tinh th n gin - Nm c mt s qui trnh ch to ca tng loi vt liu v cc ng dng ca chng

CHNG I: GII THIU CHUNGKHOA HC VT LIUCNG NGH VT LIUBn cht v cu trc vt liuMi quan h gia cu trc v tnh cht ca vt liuGii php v cng ngh ch to ra vt liu hoc cc chitit c th trn c s nhng kt qu nghin cu ca khoa hc vt liu

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I.1. Tnh cht ca vt liuTnh cht in dn inin trTnh cht c hc ca vt rn cng doTnh cht t Thun tNghch tSt tTnh cht quang Chit sut, h s hp thuPhn x, hp thu, truyn quac tnh sinh hcTnh c hiTng thch sinh hc

Mc ch ng dng yu cu v cc tnh cht

Tnh cht vt liu thch hp (cu trc, thnh phn)

Vt liu phng php ch to v gia cng (cu trc v hnh dng)

Gi thnh sn phmQui trnh la chn vt liu s dng:

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V d: la chn bao b cho sn phm nc gii kht coca-cola.

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Structure, Processing, & Properties

Properties depend on structure

ex: hardness vs structure of steel

Processing can change structure

ex: structure vs cooling rate of steel

V d 1: Tnh cht ph thuc cu trc ca thp

cng ca thp ph thuc cu trc ca nQu trnh ch to c th lm thay i cu trc vt liu

Cu trc ca thp thay i theo tc lm lnh I.2. MT VI V D V S LIN QUAN GIA QUA TRNH CH TO, CU TRC V TNH CHT CA VT LIU

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V d 2: dn in ca ng

- Pha tp Ni vo ng lm tng in tr ca n- Bin dng Cu cng lm tng in tr

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Single crystalsingle crystal connectedCrystal boundariessingle crystal connectedCrystal boundariesPores or void spacesV d 3: truyn qua ca Al2O3

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- Kim loi- Ceramic- Polyme- Composit- Bn dn- Vt liu sinh hc

I.3. PHN LOI VT LIU

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objects that are made of metals and metal alloys (from left to right): silverware (fork and knife), scissors, coins, a gear, a wedding ring, and a nut and bolt.Kim loi gm mt hay nhiu nguyn t kim loi nh (Fe, Al, Cu, Ti, Au, Ni) v cc nguyn t khng kim loi vi mt lng nh (C, N, O)

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Ceramic c to thnh t nhng nguyn t kim loi v khng kim loi,thng l hp cht ca O, N v C. Mt s vt liu ceramic ph bin l Al2O3, SiO2, SiC, Si3N4 v gm truyn thng c thnh phn chnh l khong st, xi mng v thy tinh

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Polyme bao gm nha v cao su. C cu trc phn t rt ln v trong cu trc ca chng c s lp i lp li nhiu ln nhng mt xch c bnMt s polyme thng dng: polyethylene (PE), nylon, poly(vinyl chloride)(PVC), polycarbonate (PC), polystyrene (PS)cao su silicon.

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Vt liu composite l vt liu tng hp t hai hay nhiu vt liu khc nhau nhm to ra vt liu mi c tnh nng hn hn cc vt liu ban u, khi nhng vt liu ny lm vic ring r.

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Cht bn dnl vt liu trung gian gia cht dn in vcht cch in.Cht bn dn hot ng nh mt cht cch in nhit thp v c tnh dn in nhit phng.

**Vt liu sinh hc l vt liu c ngun gc t thin nhin hay nhn to m khi tip xc vi cc m, mu hoc cht lng sinh hc trong cc ng dng nh b phn gi, chun on, cha tr nhng khng gy ra bt k nh hng xu no n cc m sng v cc b phn ca n.

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**Thit b thay th trong chnh hnh

*Approximately 245,000 knee replacements are done annually in the United States, and this number is expected to grow rapidly as the population ages.

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Catheters

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**ng dng trong nha khoa

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**Nhn khoa

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**Truyn dn thuc

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dn in ca cc vt liu

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do ca cc vt liu

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cng ca cc vt liu

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*Approximately 245,000 knee replacements are done annually in the United States, and this number is expected to grow rapidly as the population ages. *

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