TiB₂ Nanostructured Coating for GFRP Injection Moulds

Abstract

O PDF relativo ao artigo que solicita, não se encontra disponível em Acesso Aberto. Motivos: O editor não permite o depósito e disponibilização em acesso aberto do PDF que solicita. Para consultar o documento deve aceder ao endereço do editor.

Increasing the wear resistance of molds for injection of glass fiber reinforced plastics

“…4. Critical load values obtained are typical for industrial applications, being close to those found by some authors [7][8][9] for other PVD sputtered coatings. One of the most important parameters for tribological applications is the hardness.…”

Microinjection Molding of Enhanced Thermoplastics

“…Ion implantation and unbalanced magnetron sputtering PVD (Bienk & Mikkelsen, 1997), High Velocity Oxy Fuel (HVOF) and Atmospheric Plasma Spraying (APS) (Gibbons & Hansell, 2008), diamond-like carbon and silicon carbide (Griffiths et al, 2010), nanostructured TiB2 (Martinho et al, 2011), Oxide coating (Alumina) and Nitride coatings (AlN, CrN, NiCr(N), TiN) (Navabpour et al, 2006), among other surface engineering coating have been tested in order to evaluate their performance to avoid molding surface wear and assist the demolding process.…”

Improving the Wear Resistance of Moulds for the Injection of Glass Fibre–Reinforced Plastics Using PVD Coatings: A Comparative Study

“…Nowadays, increasing requirements demanded by designers have driven the use of short glass fibers as reinforcements in many parts, namely for the automotive industry. Abrasion is a typical phenomenon in the plastic injection moulding process and it becomes even more important when plastics are reinforced with glass fibres [1][2][3][4][5]. Otherwise, maintenance operations related to moulds represent the costs and inactivity periods of the mould which affect the competitiveness of the process and are strongly connected to the concept of the life cycle cost [6].…”

“…In order to overcome these problems, some authors have investigated a diversified number of surface treatments and tribological coatings [1][2][3]5,[15][16][17][18][19][20]. In fact, recent developments in coatings technology allow a multifaceted approach to each problem, using mono-or multilayered coatings, single composition or graded layers, conventional or nanostructured films.…”

“…In fact, recent developments in coatings technology allow a multifaceted approach to each problem, using mono-or multilayered coatings, single composition or graded layers, conventional or nanostructured films. More recently, some authors have tested selected films by submitting them to real injection conditions [1][2][3]21], obtaining results that allow us to think that coatings should be applied to moulds in a competitive way. The wear improvement of some steel mould inserts was also tested using a polycrystalline diamond [22] provided with an interlayer in order to avoid the diffusion of C into the Fe (substrate).…”